322740285397 has 2 divisors, whose sum is σ = 322740285398. Its totient is φ = 322740285396.

The previous prime is 322740285377. The next prime is 322740285457. The reversal of 322740285397 is 793582047223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 322730792836 + 9492561 = 568094^2 + 3081^2 .

It is a cyclic number.

It is not a de Polignac number, because 322740285397 - 2¹⁵ = 322740252629 is a prime.

It is a super-2 number, since 2×322740285397² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (322740285347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161370142698 + 161370142699.

It is an arithmetic number, because the mean of its divisors is an integer number (161370142699).

Almost surely, 2^322740285397 is an apocalyptic number.

It is an amenable number.

322740285397 is a deficient number, since it is larger than the sum of its proper divisors (1).

322740285397 is an equidigital number, since it uses as much as digits as its factorization.

322740285397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 52.

The spelling of 322740285397 in words is "three hundred twenty-two billion, seven hundred forty million, two hundred eighty-five thousand, three hundred ninety-seven".